MAC prefix 00:21:85

Micro-Star Int'L Co.,Ltd.

VendorMicro-Star Int'L Co.,Ltd.
Short nameMicroStarInt
Prefix00:21:85/24
Block typeMA-L (/24, 16,777,216 addresses)
Address range00:21:85:00:00:00 – 00:21:85:FF:FF:FF
Notations00:21:85:00:00:00
00-21-85-00-00-00
0021.8500.0000
002185000000

Frequently asked questions

Which vendor does MAC address 00:21:85 belong to?

MAC addresses starting with 00:21:85 are assigned to Micro-Star Int'L Co.,Ltd. according to the IEEE registry (prefix length 24 bits).

How many addresses does block 00:21:85 contain?

The block contains 16,777,216 addresses from 00:21:85:00:00:00 to 00:21:85:FF:FF:FF.

Is 00:21:85 a unicast or multicast address?

The least significant bit of the first byte is 0 – it is a unicast address. The U/L bit is 0, so the address is globally unique (universally administered).

How do I find the MAC address of my device?

On Linux use ip link, on Windows getmac /v or ipconfig /all, on macOS ifconfig. Note: phones and recent operating systems often use random, locally administered addresses on Wi-Fi.

Which other MAC prefixes does Micro-Star Int'L Co.,Ltd. have?

Micro-Star Int'L Co.,Ltd. holds 8 registered prefixes in total – the full list is on the vendor page.

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